Triumph Speed Four (2003)
2003 Triumph Speed Four
CarHunch analysed 229 real MOT records for the 2003 Triumph Speed Four. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 2003 Triumph Speed Four is virtually on par with the UK average, passing MOT first time at 80.5% versus 80% nationally, though one concern is that just over one in five of these bikes have recorded a dangerous defect at some point—something worth checking the service history for before purchase. These machines are running quite low mileage at a median of just 14,656 miles for their age, suggesting they may be cherished classics rather than hard-used commuters, and the 2.0 average failures per test combined with 6.0 advisories indicates minor wear accumulates rather than catastrophic issues. When you inspect one, focus on the advisory items—corrosion, worn bearings, and brake wear—as these are the patterns that emerge across the fleet rather than outright failures.
What to check before buying a 2003 Triumph Speed Four
Practical pre-purchase checks for this age and model.
- 📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
- 🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
- 🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
- ⚠️ 20.5% of these vehicles have had a dangerous defect recorded. Enter the reg below — the full MOT history will show exactly what was flagged and whether it was resolved.
- 📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.
Before you buy a Triumph Speed Four
MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Petrol (99%) | 227 | 80.6% | 2.01 |
| Other (1%) | 2 | 75% | 0.5 |
Mileage Distribution
Most 2003 Triumph Speed Four vehicles sit in the blue band. If the car you're looking at is outside it, it's either unusually low or high mileage for its age.
Half of all 2003 Triumph Speed Four vehicles fall between 9,881 and 20,748 miles.
2003 Triumph Speed Four — Still on the Road
Numbers are declining — 61 vehicles still getting MOTs in 2025 (47% of peak).
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2014–2025.
MOT History Averages
Found a specific Triumph Speed Four?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.